<template>
     <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120" v-model="msg"></textarea>

    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>

    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time">
        <div class="cmt-title">
          第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;发表时间：{{ item.add_time | dateFormat }}
        </div>
        <div class="cmt-body">
          {{ item.content === 'undefined' ? '此用户很懒，嘛都没说': item.content }}
        </div>
      </div>

    </div>

    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>

<script>
import {Toast} from 'mint-ui'

export default {
    data: ()=>({
        pageindex:'1',
        comments:[],
        msg:''
    }),
    props:['id'],
    created(){
         this.getcomment()
    },
    methods:{
        getcomment(){
            this.$http.get('http://127.0.0.1:5000/api/getcomments/'+this.id+'?pageindex='+this.pageindex).then(result=>{
                if(result.body.status ===0){
                  this.comments = this.comments.concat(result.body.message)
                }else{
                  Toast('读书数据错误')
                }
            })
        },
      getMore(){
        this.pageindex++;
        this.getcomment();
      },
      postComment(){
        if(this.msg.trim().length ===0 ){
          return Toast('请不要输入空')
        }
        this.$http.post('http://127.0.0.1:5000/api/postcomment/'+this.id,{content:this.msg.trim()}).then(function(result){
          if(result.body.status === 0){
            var cmt ={
              user_name:"匿名用户",
              add_time:Date.now(),
              content:this.msg.trim()
            }
            this.comments.unshift(cmt)
            this.msg = ""
          }
        })
      }
    }
}
</script>

<style lang="less" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
    
</style>